mercoledì 28 gennaio 2009

TBD (to be defined) ovvero a data da definire







Continuano i ritardi e gli slittamenti per il primo volo del 787 la cui fusoliera centrale è prodotta nello stabilimento Alenia Composite di Grottaglie. Dal 24 Aprile il volo è slittato a data da destinarsi (TBD)

"Though, according to program sources, internal schedules have seen a shift from identifying specific milestones dates, including first flight, towards classification as TBD, away from the originally set date of April 24."

Fra crisi di mercato, ordini cancellati e ritardi tecnici, lo spettro (che nessuno di noi si augura) della cassa integrazione anche per lo stabilimento grottagliese diventa sempre più concreto a meno che non decidano di spostare tutto il personale dello stabilimento di Grottaglie (come già una buona parte sta facendo) negli Stati Uniti per rimettere a posto le fusoliere realizzate con gli errori progettuali poi venuti fuori.

Una grande opportunità di sviluppo per il nostro territorio sta diventando una mancata opportunità nonostante la riconosciuta complessità e rivoluzionarietà del progetto 787 per l' aeronautica mondiale.

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Dreamliner One is set to come alive again, as re-power-on is expected later this week, the first time since before the IAM strike. Though, according to program sources, internal schedules have seen a shift from identifying specific milestones dates, including first flight, towards classification as TBD, away from the originally set date of April 24.
Sources add that there is no indication that first flight has moved beyond Boeing's current target of the 2nd quarter of 2009, though could signal a slip to later in the quarter.In the near term, Dreamliner One will undergo the "medium blow" test in early February, which will see the differential cabin pressure raised to 9.43 PSIg, less than the 14.9 PSIg registered on the successful "high blow" test on the static airframe in August.

In mid-February, the static airframe will complete structural rework clearing the way for additional structural testing ahead of first flight. Similar rework is also continuing on the fatigue airframe on the Boeing flight line to replace improperly installed fasteners and some strain gauges. The first flying 787 has found a spot in its new home on the 767 line surrounded by a "phalanx of manufacturing engineers and other support people" according to one Boeing engineer.

"There is no shortage of resources being thrown at [Dreamliner One] right now," the engineer added.According to a report by analyst Scott Hamilton of Leeham.net, Boeing plans to leave some temporary fasteners in place during flight test. "The small number of fasteners that won't be replaced are 1: not easy to reach AND (not OR) 2: don't represent a safety of flight issue," says Boeing. "They have the ability to withstand the loads and number of cycles expected during the flight test program. They must be repaired before long-term operations begin so they will be replaced during the refurbishment program after flight test."One 787 machinist tells FlightBlogger that Boeing was able to save considerable time toward restarting the systems integration process by dropping "hundreds" of jobs on parts that meet short term specification.
The remaining fasteners stem largely from non-deburred aluminum holes on the aircraft structure. In addition, Dreamliner One has received its engine nacelle cowling and the last of its control surfaces.






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